BIOLOGICAL CLASSIFICATION
KINGDOM ANIMALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Birds must have wings, feathers, and a ____ in order to be classified as a bird.
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nest
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worm
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beak
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tweet
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Explanation:
Detailed explanation-1: -Birds are a group of warm-blooded vertebrates constituting the class Aves (/ˈeɪviːz/), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
Detailed explanation-2: -These are the basic structures that define these animals as birds.
Detailed explanation-3: -There are mainly six types of feathers: Down feathers, contour feathers, filoplumes, bristles, flight feathers, and semiplume feathers.
Detailed explanation-4: -Bird beaks are textbook examples of ecological adaptation to diet, but their shapes are also controlled by genetic and developmental histories.
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